245 results about "Base metal" patented technology

The invention discloses a B-type sleeve welding control system and method, and belongs to the technical field of welding automation, and the B-type sleeve welding control system comprises a welding trolley, a welding gun, a visual perception unit and a control unit. By constructing a composite sensing system combining laser vision, molten pool recognition and welding gun sounding calibration, continuous and effective positioning in a narrow space in the sleeve under the condition that multiple layers of welding beads cover layer by layer is achieved. A welding gun is used for conducting welding wire penetration detection in a set coordinate system, space point positions are recorded in real time when the end of a welding wire makes contact with a sleeve and a base metal entity, self-adaptive correction of a welding bead starting point and a swing center is achieved, the positioning precision in the welding process of multiple layers of welding beads is greatly improved, and reliable reference is provided for follow-up path planning of the welding beads. A multi-sensor fusion algorithm is adopted, parameters such as the swing amplitude, the swing frequency, the welding height and the walking speed in the welding process are adjusted in real time, and the forming quality consistency of multiple layers of welding seams can be guaranteed.

To obtain excellent welding quality by suppressing an increase in generation amount of spatters even when a short circuit occurs between a welding wire and a base material in consumable electrode pulse arc welding.SOLUTION: A feed speed Fw of a weld wire is set to a forward feed peak during a peak period from a time t2 to a time t3, and is set to a reverse feed peak during a base period from the time t4 to the time t52, and a start of the peak period at the time t41 is delayed until a short circuit between the weld wire and a base metal generated during the base period at the time t52 is released.SELECTED DRAWING: Figure 3

The invention provides an electrode grid line and a preparation method thereof and conductive slurry, the electrode grid line comprises a seed layer and a base metal layer superposed on the upper layer of the seed layer, the base metal proportion in the conductive phase of the base metal layer is greater than 68%, the seed layer comprises a main grid and a seed layer fine grid, the base metal layer comprises base metal layer fine grids electrically connected with the seed layer fine grids in a one-to-one correspondence mode, at least one of the seed layer fine grids and the base metal layer fine grids is further provided with a plurality of contact pins, and the contact pins are distributed in the length direction of the corresponding fine grids at intervals. And the width of the contact pin in the line width direction of the fine grid is greater than the line width of the fine grid. The electrode grid line with the preset height is formed in a grid stacking mode, base metal is utilized by the base metal layer, the overall silver consumption amount of the electrode grid line is effectively reduced, the part, exceeding the width of the thin grid line where the contact pin is located, of the contact pin arranged on the thin grid line can be used for compensating printing precision deviation, the precision requirement for printing operation is reduced, and the contact performance is improved.

The invention belongs to the technical field of spiral welded pipe coping, and particularly discloses a coping device and method for spiral welded pipe machining, and the coping device comprises a rack, a pipe end clamping mechanism and a shape follow-up self-adaptive grinding unit. By means of the integrated self-adaptive adjusting mechanism and the multi-dimensional adjusting assembly, spiral welding pipes with different pipe diameters can be rapidly clamped, and the space postures of the grinding wheels can be accurately aligned; particularly, a flexible avoiding mechanism supported by a spring is utilized, so that the guide wheel and the grinding wheel synchronously float when encountering a high welding seam, the clamping stagnation damage of equipment and the bending of a grinding wheel shaft are effectively avoided, the heat influence caused by severe friction is obviously reduced, the metallographic structure change of the welding seam and base metal is prevented, the corrosion resistance of a welded pipe is guaranteed, and the service life of the welded pipe is prolonged. And in cooperation with automatic seam searching of the guide wheel, automatic and high-quality grinding of all welding seams is achieved.

The invention provides base metal main grid slurry, a preparation method thereof and a photovoltaic cell. The base metal main grid slurry comprises 3-8 parts by mass of nickel powder, and the surface of the nickel powder is coated with a modified component; 0.5-1 part by mass of first glass powder; 0.5 to 1.5 parts by mass of second glass powder; 13-16 parts by mass of an organic phase; 0.2 to 0.5 part by mass of an organic auxiliary agent; 15-25 parts by mass of a first silver powder; and 45-60 parts by mass of a second silver powder. The base metal nickel is used for replacing part of silver powder, the wettability is improved through surface coating, meanwhile, glass elements are optimized, the glass softening point is reduced, the paste can be sintered at the low temperature, close combination of silver particles is facilitated, and the density and conductivity of a conducting layer are improved. According to the technical scheme, the sintering is compact, the conductivity is slightly higher than that of pure silver paste, and the effects that the efficiency is equal to that of the silver paste and the tension is slightly lower than that of the pure silver paste are achieved.

Current collectors that include a bulk material defining a surface and a passivating region forming at least a portion of the surface. The bulk material includes a base metal and a dopant metal. Methods of forming current collectors. Batteries having a current collector disposed therein. Methods of using batteries having a current collector disposed therein.

This utility model discloses an oil-free lubricated bearing plate, comprising a bimetallic plate composed of a base metal plate and a sintered metal plate. Graphite insertion holes are equidistantly distributed on the bimetallic plate. A first slot is equidistantly formed on the side of the base metal plate closest to the sintered metal plate, and a first locking strip is fixedly connected to the side of the sintered metal plate corresponding to the first slot. In the production of this utility model, the base metal plate is pre-processed to form the first slot and the second locking strip. Alloy powder is then spread evenly on the base metal plate, and the base metal plate and the sintered metal plate are bonded together through sintering. The pre-processed first slot and second locking strip ensure a tight bond between the base metal plate and the sintered metal plate, greatly enhancing the bonding strength and preventing cracks from appearing between them.

The application provides a local solid solution heat treatment device and method for girth weld of a stainless steel container, the side wall of the stainless steel container is provided with a girth weld, and the treatment device comprises: a ring-shaped sprayer arranged in the stainless steel container and adapted to the position of the girth weld and used for spraying a coolant to the girth weld; a pair of induction heaters arranged symmetrically outside the stainless steel container and close to the girth weld and used for heating the girth weld; and a plurality of thermocouples uniformly distributed around the girth weld and used for measuring the temperature distribution of the girth weld. The combination of the ring-shaped sprayer, the pair of induction heaters and the plurality of thermocouples realizes automatic control of the heating speed and the cooling speed of the solid solution heat treatment, ensures the comprehensive performance of the product weld and the base metal on both sides, avoids the problem of a large amount of drainage generated by the traditional cooling method, and saves resource consumption.

To provide an electroplated tool capable of making machining efficiency and tool life compatible with each other even under a high load machining condition.SOLUTION: An electroplated article includes a base metal 10 having a surface 10S to be fixed, and a superabrasive layer 20 formed on the surface 10S to be fixed, wherein the superabrasive layer 20 includes plating 24 and a plurality of superabrasive grains 22 fixed on the surface 10S to be fixed by the plating 24. In the electroplated tool, the super-abrasive grains 22 have a shape of any one of a truncated octahedron, a hexa-octahedron, and an octahedron, 50% or more of the super-abrasive grains 22 are fixed in a state where an edge portion E which is a corner or a ridge line protrudes toward a working surface, and a ratio of an occupied area of the super-abrasive grains 22 in the super-abrasive grain layer 20 when viewed from the working surface side exceeds 80%.SELECTED DRAWING: Figure 2

The invention discloses an AMB ceramic substrate and a manufacturing method thereof, and belongs to the technical field of ceramic substrates. The AMB ceramic substrate provided by the invention comprises a ceramic substrate, a solder layer and a second metal layer, wherein the solder layer and the second metal layer are sequentially stacked on the ceramic substrate; the material of the solder layer comprises matrix metal, active metal, ceramic micro powder and an active metal compound; the thermal expansion coefficient of the solder layer is increased in the direction away from the ceramic substrate, the thermal expansion coefficient of the solder layer is larger than the thermal expansion coefficient of the ceramic substrate, and the thermal expansion coefficient of the solder layer is smaller than the thermal expansion coefficient of the second metal layer. The AMB ceramic substrate provided by the invention has excellent welding reliability, and the peel strength of the copper layer of the obtained ceramic substrate is high.

A method of refining platinum group metal containing material in a platinum group metal refinery, the method comprising: placing the platinum group metal containing material in a furnace having a flue; thermally processing the platinum group metal containing material in the furnace; capturing flue dust passing through the flue of the furnace during thermal processing of the platinum group metal containing material, said flue dust comprising platinum group metal and base metal; treating the captured flue dust in sulphuric acid to leach the base metal into solution producing a sulphuric acid leach liquor comprising the base metal and a solid residue comprising the platinum group metal; separating the solid residue comprising the platinum group metal from the leach liquor comprising the base metal; and recycling the solid residue comprising the platinum group metal for further processing within the platinum group metal refinery to recover the platinum group metal.

The medium-thickness plate aluminum alloy composite welding system comprises a stirring head and a double-wire welding gun, the stirring head is arranged on a special machine and is driven by the special machine to move in the welding direction, and the double-wire welding gun is arranged at the tail end of a robot in the using state and is driven by the robot to move in the welding direction during welding. The stirring head is arranged in the front and used for conducting friction stir welding on the splicing position of the two medium-thickness aluminum alloy plates, and the double-wire welding gun is arranged in the rear and used for conducting covering welding on indentations left by welding of the stirring head on the two medium-thickness aluminum alloy plates. The friction stir welding process is firstly adopted, the problems of fusion welding air holes and fast heat conduction of materials are solved, the welding efficiency is high, beveling before welding is not needed, welding materials and protective gas are saved, then double-wire arc welding is adopted for fast cosmetic welding, the problem that friction stir welding seams are slightly lower than base metal is solved, the cosmetic welding seams are thin, most bubbles can directly overflow, and the welding efficiency is high. And air holes are avoided.

Methods and systems of the present disclosure are generally directed to purification of metal-containing material. For example, soft oxidation may be used to generate an oxygen-free product from a low-quality alloy of a base metal. The oxygen-free product may be electrolyzed directly to generate a higher-quality alloy of the base metal – namely, an alloy with higher weight percentage of the base metal and, thus, lower weight percentage of tramp elements. As compared to recycling the base metal with a metal-air electrochemical cell, the methods and systems of the present disclosure may facilitate forming high-quality recycled metal (e.g., aluminum) using significantly less energy.

A resistance spot welding method includes a pre-energization step of performing energization on metal plates as a welding target until an alloy layer diameter reaches a predetermined target diameter, the alloy layer being formed at an outer periphery of a nugget in a welded part of the metal plates and including a constituent material of a plating layer of the metal plate and a base metal of the metal plate; and a main energization step of performing energization after the pre-energization step. The pre-energization step includes a pulsation energization that repeatedly alternates a high current energization and a low current energization, the high current energization being performed at a current higher than a predetermined threshold current, the low current energization being performed at a current lower than or equal to the threshold current. The pulsation energization includes performing the high current energization two times or more.

A method for recovering metals from waste materials includes steps of contacting a waste material feed stream with a first lixiviant adapted to leach copper and other base metals from the waste material feed stream and provide a treated waste material feed stream, recovering copper metal from the first lixiviant, contacting the treated waste material stream with a second lixiviant adapted to leach noble metals from the treated waste material feed stream and recovering gold from the second lixiviant.

Provided is a cutting tool for wood processing or paper processing, which has high wear resistance and excellent durability. The present invention relates to a cutting edge having a base metal and a cutting edge part formed from a build-up welding layer integrated on the base metal by melting a metal material containing, on a mass basis, 10% or more of V, 5% or more of Cr, and 50% or more of Fe by a laser beam while supplying the metal material to the base metal, the metal material being a metal material containing, on a mass basis, 10% or more of V, 5% or more of Cr, and 50% or more of Fe. It can be known that the material has high durability on abrasive wear and corrosive wear. Namely, corrosive wear can be reduced by containing Cr, and abrasive wear can be reduced by containing V. Furthermore, the build-up welding layer formed by laser build-up welding is less affected by heat applied to the base metal than conventional brazing or the like, and it is known that the build-up welding layer can achieve firm bonding strength.

The invention discloses base metal conductive paste for a TOPCon battery and a preparation method and application thereof, and belongs to the technical field of solar batteries. The conductive paste comprises the following components in percentage by mass: 80-90% of a conductive phase, 2-8% of a glass phase and 5-15% of an organic carrier, the conductive phase comprises silver powder and phosphate-coated base metal powder, the mass ratio of the silver powder to the phosphate-coated base metal powder is (55-65): (35-45), and the base metal powder is one or more of aluminum powder, copper powder and nickel powder. The phosphate coating layer is constructed on the surface of the base metal powder, so that the problems that base metal is easy to oxidize and poor in compatibility with glass are effectively solved, the base metal powder can replace part of expensive silver powder, and the cost of the front silver paste of the TOPCon battery is remarkably reduced while excellent conductivity and interface bonding force are kept. The slurry is suitable for preparing a grid line of a high-efficiency TOPCon solar cell.

The article according to this design is a cutting insert for a milling cutter used to process, for example, non-ferrous metal parts, resin parts, etc., and as shown in the reference diagram showing the state of use, it has a base metal and a blank brazed to the base metal. By inserting a fixing member such as a screw into the through hole of the article according to this design, the article according to this design is fixed to the body, and by rotating the body, the workpiece is cut. The article according to this design has a chip discharge pocket to prevent chips from clogging.

In a submerged arc welding control method, the voltage tolerance required to stabilize the welding state is widened, even when the distance between the power supply tip and the base metal is long. [Solution] In a submerged arc welding control method that outputs a welding current Iw and a welding voltage Vw based on a voltage setting value Vs and a current setting value Is, and controls the welding wire feeding speed Fw to a variable speed so that the detected welding voltage Vd is equal to the voltage setting value Vs, the variable speed control is performed based on a value obtained by subtracting a correction value Vc set according to the distance Lr between the power supply tip and the base material from the detected welding voltage Vd.

The invention discloses an X65 hydrogen transmission pipeline steel low-hydrogen embrittlement sensitivity welded joint which comprises the following chemical components of base metal in percentage by mass: 0.02-0.045% of C, 0.12-0.20% of Si, 0.70-1.30% of Mn, less than or equal to 0.010% of P, less than or equal to 0.0008% of S, 0.10-0.30% of Ni, 0.20-0.35% of Cr, 0.10-0.20% of Cu, 0.03-0.05% of Nb, 0.010-0.10% of Mo, 0.035-0.06% of V, 0.01-0.02% of Ti and the balance of Fe and inevitable impurities, meanwhile, through regulation and control of microalloy elements of the base metal and matching of a straight seam double-face submerged arc welding process, the welded joint has high strength and high toughness, and the welded joint has high hydrogen The X65-grade pipeline steel has the outstanding advantage of low hydrogen embrittlement sensitivity while the mechanical property requirement of the X65-grade pipeline steel is met, and the technical problems in the research and development process of materials for the hydrogen transmission pipeline steel are solved.

The utility model relates to the technical field of tunnel blind pipe heat preservation, in particular to a heat preservation device for a tunnel circumferential blind pipe. The device comprises an insulation board, the insulation board is provided with concave and convex interfaces which are matched with each other, and the edge of the insulation board is subjected to factory chamfering treatment to form a uniform section. By means of the concave-convex connector design, splicing gaps between the adjacent heat preservation plates can be eliminated, and it is guaranteed that the heat preservation effect at the joints is consistent with that of base metal; meanwhile, the heat preservation plate can be finely adjusted in an arc shape according to the tunnel section structure to be tightly attached to the tunnel face. In addition, due to the factorization customized clamping groove structure and the unified section design, the field installation difficulty and the labor cost are reduced, the technical problems that a traditional heat preservation plate with the fixed size is difficult to bend, and the heat preservation effect at the joint is poor are solved, and the anti-freezing heat preservation performance and the construction quality of the blind pipe are remarkably improved.

The present invention provides a method for preparing a weld specimen with a crack, which relates to the technical field of weld specimen preparation. The method comprises the following steps: S1: Process the bevels at the welding ends of two base metals. The main weld is located between the two bevels, and the two base metals are welded at the main weld; S2: Process a first groove on the outer side wall of the base metal, and the first groove penetrates through the main weld; S3: Weld in the first groove to form an induced layer; S4: Process a second groove on the surface of the induced layer, and perform welding in the second groove by means of fusion welding. After welding, perform a cooling treatment to generate cracks; S5: Complete the welding of the cover layer of the main weld, and cover the crack inside the welding material during welding. By adopting the present invention, the crack morphology is realistic, and the position and depth of the crack are easy to control during the preparation process. It can be detected and verified in ultrasonic testing to ensure the reliability of the simulation test results. Compared with the fatigue loading method, this method effectively saves the production cost and time of cracks.

The present application belongs to the field of metal matrix composites, powder metallurgy technology and rapid condensation forming, and more particularly relates to a preparation method of a particle reinforced metal matrix composite with large density difference. First, a composite powder of a reinforcing phase and a base metal is obtained by ball milling, and the composite powder is pre-pressed and formed, and then subjected to spark plasma sintering, so that the particle reinforced phase powder and the base metal powder are rapidly sintered and formed, and the interface of the two phases does not react; after sintering, the pressure is released and the furnace is cooled, and a metal matrix composite mother ingot is obtained; then the metal matrix composite mother ingot is rapidly heated and melted in an inert atmosphere to obtain an alloy melt, so as to remove the pores formed in the sintering process of the metal matrix composite mother ingot, and finally the alloy melt is rapidly cooled to obtain a composite material which is uniformly dispersed, high in density, excellent in mechanical properties and free of air trapping.

Provided is a vitrified-bond superabrasive wheel comprising a base metal and a vitrified-bond superabrasive layer fixed thereto, wherein the superabrasive layer comprises superabrasive grains and a vitrified bond and has voids. The superabrasive grains have an average grain diameter of 0.02-1.0 μm and the voids include small voids having diameters of 0.10 μm or larger but smaller than 10 μm, the average value of the diameters of the small voids being 0.3-3.0 μm. The voids include large voids having diameters of 20-500 μm, the average value of the diameters of the large voids being 20-120 μm and the average value of void-to-void distances of the large voids being 40-300 μm.

The invention relates to a stainless steel micro-indentation resistance spot welding process, and belongs to the technical field of welding. The electrode cap is divided into a center part and an edge part, and the current distribution is controlled by an insulating layer on the outer side of the center part. The two parts are made of homogeneous materials with good thermal conductivity, the heat dissipation effect of the electrode cap is guaranteed, and the yield strength of stainless steel base metal in the high-temperature welding process is improved. Meanwhile, the contact surface of the electrode cap and the plate is a plane, so that the depth of the indentation on the surface of the welding joint is further reduced. The resistance spot welding process comprises three stages of pre-pressing, electrified welding and cooling, and high efficiency and stability of the welding process are ensured by adjusting accurate welding parameters such as electrode pressure, current magnitude and welding time. The surface performance of a stainless steel resistance spot welding joint is improved, the problem of surface indentation in the resistance spot welding process of a stainless steel material is effectively solved, and a more reliable and efficient welding technology choice is provided for the high-end manufacturing field of automobiles, railway vehicles and the like.

An electric resistance welded steel pipe includes a base metal zone and an electric resistance welded zone. The base metal zone has a chemical composition containing, by mass, predetermined amounts of C, Si, Mn, P, S, Al, N, Nb, V, and Ti, with the balance being Fe and incidental impurities. The steel microstructure of the wall-thickness center of the base metal zone includes ferrite and bainite such that the total volume fraction of the ferrite and the bainite in the steel microstructure is 70% or more, with the balance being one or more selected from pearlite, martensite, and austenite. The steel microstructure has an average grain size of 7.0 m or less and a dislocation density of 1.0×1014 to 6.0×1015 m−2. The residual stress generated in the inner and outer surfaces of the pipe in the axial direction is 150 MPa or less.

The solar cell comprises a cell main body and a grid line structure, the grid line structure comprises an auxiliary grid line, the auxiliary grid line comprises a transmission part and a plurality of current collecting parts, the current collecting parts are arranged on the cell main body and extend along a first direction, the plurality of current collecting parts are arranged at intervals along a second direction, and the transmission part is arranged on the transmission part. The transmission part is connected to the plurality of current collecting parts, the transmission part extends in the second direction, the transmission part is made of base metal and silver, the current collecting parts are made of silver, and the first direction and the second direction intersect with the thickness direction of the battery main body in pairs. By adopting the scheme of the utility model, the silver consumption of the auxiliary grid line can be reduced, and the cost of the solar cell is reduced.

The present invention relates to a composition comprising a base metal and a number of at least six alloying elements. Furthermore, the present invention relates to the use of such a composition and to a vehicle component comprising such a composition.

The application discloses a pipe backing welding process planning method based on laser vision scanner and process knowledge base cooperation, and core contents comprise the following steps: firstly, an excellent backing welding forming size model and a process knowledge base are established based on an excellent weld evaluation standard; then, a laser vision scanner is used to scan a groove and acquire characteristics of each section of the groove; finally, welding process parameters of each section are acquired based on a process parameter calculation model. In the method, the excellent weld size model can calculate a required welding wire melting area, a high side base metal melting area of the groove, and an area of more melting welding wire than the high side of the low side of the groove according to a scanning obtained gap and a misalignment amount of each section. The process knowledge base can automatically match parameters in the welding process parameter calculation model according to pipe material, a pipe diameter and a wall thickness to be welded. The characteristics extracted by the vision scanner are converted into variables in the calculation model through the excellent weld forming size model, and parameters in the model are matched in cooperation with the process knowledge base, so that accurate backing welding process parameter planning under actual working conditions is realized.

An upper plate and a lower plate of the liquid cooling case are flow channel cold plates, a left side plate of the liquid cooling case is provided with an inlet and an outlet of a liquid pipe, each flow channel cold plate comprises a base material, the base material is provided with a mounting groove with an opening facing the interior of a case body, the mounting grooves are used for containing the liquid pipe, and the liquid pipe is distributed in the base material in a snake shape. The opening end of the mounting groove is provided with brazing filler metal, the brazing filler metal is connected with the base metal in a welded mode so that the liquid pipe can be fixed in the base metal, and the liquid pipe in the upper plate communicates with the liquid pipe in the lower plate. According to the invention, the installation difficulty and cost of the liquid pipe in the liquid cooling cabinet are reduced, the possibility of leakage of the liquid pipe is reduced, and the working environment of the cabinet is ensured. The system can be applied to equipment with high integration level and large heat productivity, can realize distributed heat dissipation according to the position of a high-energy-consumption module, and has important application value for heat dissipation of the whole system.